Oh, well. So the difference is small amount of specialized weapons against all bursting weapons, and thus differentiated classes, I think. So playstyle will be different as well, especially in small quarters because instead of melee and flamer you'll have the half of the team able to 1hex.
You know, Cirn actually suggested to turn on 1 hex for a week for testing couple of days ago. If you really want, I think he is still don't mind.
E.g. currently you can stay 1 hex to the MG without any problem, won't be possible anymore.
This:
http://youtu.be/ZMizkziS0fc?t=1m17s never happens at AoP. I don't really miss it.
Yeah, so basically it's toilet control mk2.